JP2685618B2 - Oil-filled stationary equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a structure of a monitoring device mounting portion for managing the oil level and the oil temperature of insulating oil in an oil-filled stationary device.

[Conventional technology]

The conventional method for mounting monitoring equipment is to order different monitoring equipment mounting seats to control the oil surface and oil temperature, and re-drill a hole in the pre-made cover to match the mounting seat with this hole. The entire circumference of the seat was welded and the monitoring equipment was attached to this.

Incidentally, as a related attachment method of this kind, for example, Japanese Utility Model Publication No. 60-183405 can be cited.

[Problems to be solved by the invention]

The above-mentioned prior art is a method in which different monitoring device mounting seats are individually re-drilled in the ready-made cover in order to manage the oil level and the oil temperature, and the mounting seats are aligned with the holes and welded. Therefore, even if the customer requested to install the monitoring equipment at the delivery destination after the product was delivered, it was not possible because the standard product did not have a mounting seat. In addition, in the case of monitoring equipment in the factory, as a method of ordering, the hole was reopened in the pre-made cover and the mounting seat was welded.Therefore, the mounting seat is designed to standardize the cover and shorten the delivery time of products. Welding was a problem.

An object of the present invention is to facilitate modification after product delivery.

Another object of the present invention is to standardize the cover in the factory and shorten the delivery time of the product.

[Means for solving the problem]

In order to achieve the above object, a press-out portion having a hole is provided in a part of the cover of the oil-filled stationary device, and studs are welded along the outer periphery of the press-out portion. Since standard products are usually shipped without monitoring equipment, a gasket is laid on the upper surface of the press-out part to maintain airtightness inside the tank, and a block with holes that match the number of studs welded and the mounting pitch is placed on the gasket. After covering the plate, insert a stud into the stud and tighten the cover plate.

Also, in the case of ordered products with monitoring equipment, remove the above-mentioned cover plate and insert the measuring part of the monitoring equipment into the hole formed in the press-out part to measure the oil level and oil temperature. Similar to the above mounting method, the metal fitting is tightened and fixed by using the metal fitting.

[Action]

Regardless of whether or not the monitoring device is provided, a press-out portion having a hole is provided in a part of the cover of the oil-filled stationary device, and studs are welded along the outer periphery of the press-out portion. Normally, monitoring equipment is not attached to the standard product, so a gasket is laid on the upper surface of the extruded part, a cover plate with hole holes matching the number of welded studs and the mounting pitch is placed on the gasket, and then the stud is nutd Insert the to tighten the plate, or if the product is to be ordered and has a monitoring device, remove the cover plate and insert the measuring part of the monitoring device into the hole formed in the press-out part, and attach a dedicated mounting bracket for each. Use the same method as above to tighten and fix the metal fittings.

Further, the press-out portion elastically fixes the cover plate or the mounting bracket of the monitoring device. This makes it easy to install monitoring equipment at the delivery destination after product delivery, and eliminates the need to weld the dedicated monitoring equipment mounting seats to the cover in the factory to meet conventional orders. Therefore, it is possible to standardize the cover and shorten the delivery time of the product.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. Currently, in the oil-filled transformer, when controlling the oil surface and the oil temperature of the insulating oil 16 enclosed in the tank 15, the monitoring device (from the hole formed on the upper surface of the cover 14 as shown in FIG. 10 ( The monitoring unit 8 and the dial thermometer 9) have a measuring unit that is inserted and fixed to directly measure. Therefore, as shown in Fig. 1, it is pre-covered with or without monitoring equipment when shipped from the factory.
An extruding seat 5 having a hole 6 is provided in a part of 14, and the stud 1 is welded along the outer periphery of the extruding seat 5. Since monitoring equipment is not normally attached to the standard product, in this case, as shown in FIGS. 2 and 5, a gasket is attached to the upper surface of the pressure seat 5 in FIG.
Cover 11 with a cover plate 7 having holes that match the number of studs 1 welded and the mounting pitch, and insert flat washer 4, spring washer 3 and nut 2 into stud 1 and tighten cover plate 7 to make it airtight. Hold. Next, in the case of mounting the monitoring device 8 at the time of factory shipment and after delivery of the product for ordering products,
As shown in the figure, a gasket is attached to the upper surface of the pressure seat 5 of FIG.
Lay out 11 and place the monitoring device 8 on top of this and add gasket 11
Using the mounting bracket 10 sandwiched by, tighten with a stud screw in the same manner as above to maintain airtightness. Further, when mounting the dial thermometer 9, as shown in FIGS. 4 and 7, a gasket 11 is laid on the upper surface of the press-out seat 5 of FIG. 1, and a hole is formed in the cover plate 7 on this to mount the dial thermometer. After mounting the mounting bracket 10 by welding the seat 13 and tightening it with the studs in the same manner as described above, the dial thermometer 9 is mounted to keep the airtightness.

In the present embodiment, since the closing plate 7 or the mounting bracket 10 is fastened on the pressing seat 5 by the studs 1 planted around the pressing seat 5, the closing plate 7 or the mounting bracket 10 can be elastically fixed. Therefore, deformation of the closing plate 7 or the mounting member 10 at the time of fastening can be prevented, and the closing plate 7 or the mounting member 10 can be brought into close contact with the press-out seat 5 by the elastic force, and the airtightness can be improved. According to this embodiment, the monitoring equipment (monitoring device 8 and dial thermometer 9) can be easily installed at the delivery destination even after the product is delivered, and the cover 14 can be processed later in the factory in response to the custom-ordered product. 8th,
9 Monitoring device mounting seat 12, dial thermometer mounting seat as shown in Fig. 9
Since what was welded to 13 can be eliminated, it is possible to standardize the cover and shorten the delivery time of the product.

〔The invention's effect〕

According to the present invention, since the pressure seat for mounting the monitoring device is provided on the cover with or without the monitoring device, the airtightness can be improved and the monitoring device can be easily mounted at the delivery destination after the product is delivered. Can be done. Further, in the factory, it is possible to eliminate the need to weld the dedicated monitoring device mounting seats to the covers, which correspond to the conventional orders, so that the standardization of the cover and the quick delivery of the product can be achieved.

[Brief description of the drawings]

1 is a perspective view of a cover press-out portion according to an embodiment of the present invention, FIG. 2 is a perspective view when a cover plate is attached to FIG. 1, and FIG. 3 is a monitor device when attached to FIG. FIG. 4 is a perspective view when the dial thermometer is attached to FIG. 1, and FIG. 5 is a perspective view of FIG.
FIG. 6 is a sectional view taken along the line AA ′, FIG. 6 is a sectional view taken along the line BB ′ in FIG. 3, FIG. 7 is a sectional view taken along the line CC ′ in FIG. 4, and FIG. 8 is a conventional monitoring device mounting seat. FIG. 9 is a perspective view of the conventional dial thermometer mounting seat when the cover is attached, and FIG.
The figure is a front view of the oil-filled transformer. 1 ... Stud, 2 ... Nut, 3 ... Spring washer, 4 ...
… Flat washer, 5 …… Pressing seat, 6 …… Hole hole, 7 …… Closed plate,
8 ... Monitoring device, 9 ... Dial thermometer, 10 ... Mounting bracket, 11 ... Gasket, 12 ... Monitoring device mounting seat, 13 ...
Dial thermometer mounting seat, 14 …… cover, 15 …… tank,
16 ... Insulating oil, 17 ... Weld beads

Claims (1)

(57) [Claims] 1. An iron core around which a coil is wound, a tank for housing these, a cover having a bushing attached to the upper part of the tank to draw out a lead wire from the coil to the outside of the tank, and an insulation for insulation. In an oil-filled stationary device made of oil, an extruding seat having an insertion hole formed in a part of the cover, a stud welded along the outer periphery of the seat, and a detachable member for the extruding seat. An oil-filled stationary device comprising an airtightly fixed cover plate, and is configured such that when the monitor device for managing the oil surface and the oil temperature is mounted, the cover plate can be removed to mount the monitor device. .